I thought the assembly was laid out easy to put together .What I found was the connecting traps where very hard to join the folding bed together with the mattress in it. So I had to remove the mattress and join the bed together without the mattress ,then a tempt to squeeze the mattress back in between the fold up frame .Which was very difficult to do ,but finally manage to do . It have been so much better if the traps would have been a quarter of an inch longer .The other thing I was wondering where I could purchase bed sheets for this twin mattress .